The Bluetooth USB Dongle is an external dongle, for enabling Notebook and Desktop PC's to communicate wirelessly through USB interface with other Bluetooth enabled devices (for example:

By pluging one dongle into a home system and one into a notebook and have the computers connect this way). This Bluetooth USB dongle has a data rate of 723 kb/sec (max), and is fully compliant with Bluetooth specification version 1.1 standard, class1 operation, which allows up to 20 dBm output power, supporting an operation
range of up to 100 meters (approximately 300ft).